Revert of [heap] Move large object space selection into AllocateRaw.

Revert of [heap] Move large object space selection into AllocateRaw. (patchset #2 id:20001 of https://codereview.chromium.org/1373523002/ )

Reason for revert:
Breaks mac asan:
http://build.chromium.org/p/client.v8/builders/V8%20Mac64%20ASAN/builds/2895

According to auto bisect

Original issue's description:
> [heap] Move large object space selection into AllocateRaw.
>
> BUG=
>
> Committed: https://crrev.com/e4f7ebb000432cc2011ecaaa71a69e2e60f416f0
> Cr-Commit-Position: refs/heads/master@{#30938}

TBR=mlippautz@chromium.org,hpayer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/4c64573de1716e2cdbb4814b31f7d281cc529e2a
Cr-Commit-Position: refs/heads/master@{#30948}

[Michael Achenbach, 2015-09-25 16:10:51]

Created Revert of [heap] Move large object space selection into AllocateRaw.

[commit-bot: I haz the power, 2015-09-25 16:11:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1368833004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1368833004/1

[commit-bot: I haz the power, 2015-09-25 16:11:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-25 16:11:33]

Patchset 1 (id:??) landed as
https://crrev.com/4c64573de1716e2cdbb4814b31f7d281cc529e2a
Cr-Commit-Position: refs/heads/master@{#30948}